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2003 GMC SIERRA 1500 HD Transmission & Drivetrain
Showing In Stock Items. Show All 286 Items.
Lokar Midnight Series Flexible Braided Stainless Transmission Dipsticks
Lokar's Midnight Series flexible braided stainless transmission dipsticks feature a heat-resistant PTFE rod with a black braided stainless steel cover. The flexible inner rod is stamped with appropriate trans-fluid levels, and the outer housing has a slim design that allows for mounting them inside of the headers. They're available in both firewall-mount and trans-mount styles, and a funnel adapter is included for assistance with filling. Order the length recommended for your transmission application.
( 80 )
$151.95
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$176.95
Motive Gear Ring and Pinion Sets
Motive Gear is the leading manufacturer of driveline products for just about any vehicle, whether it is a stock daily driver or a full-competition 4x4 or race car. They are proud to offer an unmatched selection of quality components engineered and manufactured for the vehicle and for the way it is driven. Motive Gear ring and pinion sets are engineered to meet or exceed OEM specifications at a price that won't break your budget. Their broad selection of ring and pinion ratios is available for just about every vehicle made from the 1940s through the present. All Motive Gear products meet strict quality standards through advanced manufacturing techniques and are backed by their strong warranty. Their in-house quality control lab utilizes state-of-the-art equipment to continuously check Motive Gear products for strength, tolerance, and hardness. Only after meeting stringent quality standards are Motive Gear products packaged and ready for delivery.
( 284 )
$165.99
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$679.99
Summit Racing™ Ring and Pinion and Differential Pro Packs
Put that horsepower to the ground through both wheels. These Summit Racing™ ring and pinion and differential Pro Packs feature the parts necessary to complete your rear differential transformation. They include a Traction-Lock differential from Ford Racing, a ring and pinion gear set, a ring and pinion installation kit, a 4 oz. bottle of friction modifier, and 2 qt. of 75W90 gear lube. These Summit Racing™ ring and pinion and differential Pro Packs come available in different gear ratios, so we are sure to have one to suit your vehicle's needs.
( 3 )
$999.97
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$1,021.97
TCI Filler Tubes and Dipsticks
TCI introduces a fresh line of quality filler tubes. Applications for the most popular Ford, GM, and Chrysler transmissions are available. Most of the dipsticks feature a locking stick that satisfies sanctioning bodies' racing rules. The rubber boot seal is a vast improvement over the small O-ring typically used on older OEM tube designs.
( 188 )
$65.95
Eaton Detroit Truetrac Differentials
Eaton Detroit Truetrac differentials use a patented design of parallel-axis planetary helix gears to provide a quiet, automatic splitting of torque. They perform like a limited-slip differential under normal driving conditions, automatically transferring torque to the wheel with better traction when ground conditions warrant. These replacement units are available for dozens of axle applications.
( 507 )
$813.99
B&M Holeshot Torque Converters
A higher-than-stock stall speed as delivered by these B&M Holeshot converters will provide several advantages and benefits to vehicles with modified engines. Many modifications, particularly big cams, tend to reduce low-end power and torque. These high-stall converters allow the engine to launch the car at higher rpm, where more torque is available. They're a very good choice for the typical street machine that is looking for better launch capability and more strength.
( 84 )
$819.95
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$1,075.95
Summit Racing™ Positraction Differential Carriers
Summit Racing™ Positraction differential carriers deliver aggressive, yet smooth, controllable traction. Our carriers feature nodular iron cases, forged steel internals, strong teeth—and they're fully rebuildable. We offer fitments for dozens of axle models. Whether replacing or upgrading, Summit Racing™ Positraction differential carriers will put power to the pavement, providing the confidence and performance you need.
( 49 )
$641.99
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$821.99
Sachs Stock Replacement Flywheels
Replace your worn-out or malfunctioning flywheel with one of Sachs Stock Replacement flywheels. These quality components are built to OEM specifications to offer the same fit, form, and function as the factory part, which means a safer, more comfortable, and contemporary drive. All Sachs Stock Replacement flywheels are designed to provide superior performance and dependability to help restore your vehicle back to its proper operation. Choose the replacement flywheel designed to fit your application needs.
( 1 )
$115.99
Hays Twister 3/4 Race Torque Converters
Hays Twister 3/4 Race performance torque converters are designed to be the perfect solution for your street/strip machine. Hays designed the Twister torque converters to be one step short of being a "Full Race" converter giving you the perfect combination of performance and affordability. Every torque converter is hand built, inspected and tested to ensure they meet the top of the line quality you expect. To ensure consistency and improve performance each converter is built for one transmission with one bolt pattern, meaning a lighter converter to maximize performance. High flow stators promote better cooling and heavy duty Torrington bearings are used to increase strength and durability. Not ready to go a "Full Race" converter, Hays is there for you with their Twister 3/4 Race torque converters.
( 11 )
$767.95
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$1,024.95
Richmond Gear EXCel Ring and Pinion Sets
Richmond Gear EXCel ring and pinion sets are manufactured to meet the exacting specifications required by Richmond Gear. The design, tooling, steel selection, and heat-treat recipes are all controlled by Richmond Gear to produce cost-alternative ring and pinion sets. The Richmond Gear EXCel ring and pinion sets offer exceptional value with better-than-OEM quality. Available in a wide variety of gear ratios, the Richmond Gear EXCel ring and pinion sets will give you maximum confidence in your differential.
( 143 )
$163.33
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$407.99
Hays Heavy-Duty Flexplates
Hays heavy-duty flexplates for high performance and competition engines are constructed from a thicker-than-stock steel plate. This enables them to withstand the stress of high-stall torque converters and high-rpm engines. While factory stock plates tend to crack around the crankshaft hub when punished under high-torque and rpm conditions, the thicker Hays flexplates can handle the force. These heavy-duty flexplates are supplied with a ring gear that is securely welded in place. All Hays heavy-duty flexplates are zinc-dichromate plated to resist corrosion and SFI-certified under specification 29.1.
( 63 )
$210.95
TCI Governor Covers
Has your vehicle's governor cover from the factory reached its "term limit?" Might be time to choose a replacement from the experts at TCI Auto! Your old rusted and dented cover has seen years of abuse, so why let it ruin the looks of your engine bay? Now you can dress up your transmission governor with corrosion-resistant stainless steel. These aesthetically pleasing options are available in two styles—exact OEM replica or stamped with the TCI logo. Both include a rubber O-ring for a leak-free seal. Conceal the hole where the governor is located and hold it in place on the transmission with a beautiful stainless cover from TCI.
( 45 )
$40.95
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$42.95
Lokar Hi-Tech Flexible Braided Stainless Transmission Dipsticks
Lokar's Hi-Tech flexible braided stainless transmission dipsticks match right up with other Lokar accessories. They feature a flexible, heat-resistant PTFE rod with a braided stainless steel cover. The inner rod is stamped with appropriate trans-fluid levels, and the outer housing has a slim design that allows for mounting inside of the headers. These dipsticks are available in both firewall-mount and trans-mount styles, and a funnel adapter is included for assistance with filling. Order the length and other options preferred for your vehicle make and transmission application.
( 337 )
$138.95
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$163.95
Strange U-Joints
Strange U-joints are great. They're made from top-quality materials for a good fit with your drivetrain components.
( 16 )
$34.99
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$35.99
Summit Bucks
Moog Super Strength U-Joints
Moog Super Strength U-joints are precision-manufactured to exacting standards. They have forged and case-hardened alloy steel crosses and heat-treated needle bearings. Cold-formed radial bearing cups provide 360 degree lubrication distribution, while superior-quality seals and a grease fitting make for easy maintenance. In addition, the Super Strength U-joints have an exclusive microshield coating to protect against rust and corrosion. They are available in greasable and non-greasable styles for more than a dozen positions--in universal and vehicle-specific applications.
( 227 )
$15.99
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$25.99
Motive Gear Performance Ring and Pinion Sets
Motive Gear Performance ring and pinions are perfect for dedicated racing or off-road vehicles. Their gear sets are made from first-run steel, they never use recycled metal. This allows Motive Gear Performance ring and pinions to handle the extreme torque from high-horsepower racing engines. Extensive engineering, computer-controlled heat treatment, superior strength, quality and the widest selection of racing gear ratios, makes Motive Gear Performance ring and pinions the clear winner! Engineered to the highest standards, every Motive Gear Performance product goes through rigid quality control processes in their in-house lab. Motive Gear Performance also offers a lightweight alternative to standard ring and pinion gear sets. Their AX Series ring and pinions are designed to increase horsepower and efficiency by removing rotating weight. Professional race teams have used custom-lightened drivetrain parts for years, resulting in faster times and more wins. The AX Series gears from Motive are lightened during the manufacturing process; this results in gear sets that have been engineered, not modified. Computer-controlled heat treatment, index tooth spacing, and CNC machining all go into AX Series performance gear sets. Motive Gear Performance: What the pros run!
( 194 )
$419.99
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$478.99
Timken Differential Bearings
Make sure that the job is done right with Timken differential carrier bearings. You can trust Timken to supply you with bearings manufactured with technology-driven processes to the most stringent of thresholds and manufacturing tolerances. Look to Timken's differential bearings to provide you with the confidence that you need when completing your ring and pinion installations.
( 49 )
$15.99
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$56.99
ACDelco Differential Carriers
Have to replace the differential carrier on your vehicle? ACDelco differential carriers are genuine OEM replacements with the fit of original equipment. Made with top-notch OEM-quality, these units are built to not only last, but keep your vehicle operating safely.
( 2 )
$554.99
ACDelco Gold Wheel Bearing and Hub Assemblies
ACDelco Gold wheel bearing and hub assemblies are the high-quality alternative to original equipment parts. These unitized wheel bearings contain dual ball or tapered roller bearing elements sealed with a lifetime lubrication. ACDelco Gold replacement parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. The assemblies are available in dozens of options for fitment on countless vehicles from the 1970s and up.
( 5 )
$203.99
Dorman Transmission Pans
Dorman transmission pans are the perfect OE replacements for those rust-prone parts. Some things just don't last forever. So, when it's time to replace your transmission pan, look to Dorman for the qualities, fit, and function you need to keep your vehicle on the road. Check and service your parts often and replace them with Dorman.
( 90 )
$81.95
Summit Bucks
Moog Wheel Bearing and Hub Assemblies
Moog wheel bearing and hub assemblies feature problem-solving innovations and include application-specific design enhancements. They are engineered to overcome problems and deliver smooth, reliable performance. Features and benefits of Moog wheel bearing and hub assemblies include: * Roll-form design ensures consistent and optimal preload * Precision-matched components; rigorously controlled manufacturing processes ensure exact matching of bearing raceways and rolling elements to consistently deliver superior performance and minimize noise and vibration * Moog abrasion-resistant ABS cord manufactured from a blended material that offers increased abrasion resistance and better protection from adverse conditions * For applications that require it, ABS molded shield and socket connections for even greater defense against contamination * Premium quad-lip seal design ensures maximum protection from contamination * Wheel studs have a protective coating that helps prevent rust and corrosion, enabling easier removal and proper torqueing of wheel nuts
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$160.99
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$175.99
GSP New CV Axle Assemblies
GSP new CV axle assemblies are engineered to provide OE fit, form, and function. Premium materials, coupled with precise machining and balancing, ensure smooth, vibration-free performance in all driving conditions. All axles are thoroughly inspected for quality and workmanship. Additional attributes of GSP new CV axle assemblies include: * Since boot failure is the main cause of CV axle failure, GSP axles use only premium-grade neoprene boots that ensure robust abrasion and extreme temperature resistance, preserving boot integrity * Assembled with a specially formulated, high-temperature moly grease that resists friction and wear, contributing to a lifetime of smooth, dependable performance
( 89 )
$209.99
ACDelco GM Genuine Parts Flywheel and Flexplate Spacers
ACDelco GM Genuine Parts flywheel and flexplate spacers are designed, engineered, and tested to rigorous standards and backed by General Motors. These true OE replacements will help to reposition the flywheel, allowing for appropriate clutch pedal height and assembly location. They provide proper engagement and disengagement of the clutch during vehicle operation, aiding in optimal shifting. The spacers offer factory fit and performance in specific GM vehicles.
( 2 )
$49.99
Motive Gear Master Ring and Pinion Installation Kits
Motive Gear master ring and pinion installation kits include everything that's in their regular differential kit—plus pinion shims, carrier shims, and ring gear bolts (where applicable). You also have the option of upgrading to higher quality bearings by adding "T" to the end of the part number on some models. Make a better choice for your ring and pinion installation with Motive Gear differential master bearing kits. Order the model designed for your vehicle application.
( 343 )
$113.99
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$263.99
